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Ksivusya [100]
3 years ago
13

A single atom of calcium could combine with a single atom of fluorine, creating electron energy stability for both atoms. True F

alse
Chemistry
1 answer:
Tanya [424]3 years ago
5 0
False. Each atom of calcium needs two atoms of fluorine to create an ionic compound. The atom of calcium could gain stability if it gives the last two electrons in the highest energy level. The fluorine atom only can accept one electron in its highest level of energy to complete it and to reach the lowest energy level. This is the reason because an atom of calcium needs two atoms of fluorine.

If you detect any mistake in my English, please tell me!
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Durante 50 s un cuerpo viaja a una velocidad de 18.5 m/s, ¿Qué distancia recorrió?
weeeeeb [17]

Answer:

Distancia = 925 metros.

Explanation:

Dados los siguientes datos;

Tiempo = 50 segundos

Velocidad = 18.5 m/s

Para encontrar la distancia recorrida;

Matemáticamente, la distancia viene dada por la fórmula;

Distancia = velocidad * tiempo

Sustituyendo en la fórmula, tenemos;

Distancia = 18.5 * 50

Distancia = 925 m.

Por tanto, el cuerpo recorrió una distancia de 925 metros.

7 0
3 years ago
HELP 50 POINTS WILL BE AWARDED I need 3-5 sentences that explains the importance of reaction types (combustion decomposition syn
Fofino [41]

Explanation:

Combustion reaction: Type of a chemical reaction in which compound and an oxidant reacts together to form a new product with release of an energy in the form of heat.

Decomposition reaction: Type of a chemical reaction in which compound breaks down into two or more elements or into new compounds.

ABC →  A + B + C

Synthesis reaction: Type of a chemical reaction in which two or more than two reactant reacts together to form a single product.

A + B + C  →  ABC

Single replacement reaction: Type of a chemical reaction in which element reacts with a compound and takes the place of another element in the compound.

A + BC → BA + C

Double replacement reaction: Type of chemical reaction in which two compounds reacts is such a way that the cations and anions of the compounds exchange their places to form new products.

AB + CD  →  AD + CB

6 0
3 years ago
Somebody please help asap​
11Alexandr11 [23.1K]
The correct answer is Earth
8 0
2 years ago
Read 2 more answers
Wear _______________________ when handling batteries, because they can explode or leak.
Basile [38]

The answer is: b. Safety glasses and acid-resistant gloves.

Battery acid (sulfuric acid) has pH = 0.

Sulfuric acid (H₂SO₄) is a strong acid, it means that the solution of sufuric acid is more acidic (pH<7) than water (pH = 7).

Chemical dissociation of sulfuric acid in water:  

H₂SO₄(aq) → 2H⁺(aq) + SO₄²⁻(aq).  

Sulfuric acid can come in contact with eyes and hands, so it is important to wear safety glasses and acid-resistant gloves.

4 0
3 years ago
Determine the possible traits of the calves if:
White raven [17]

Answer:

1. All red calves i.e. RR

2. All roan calves i.e RW

3. 2 red calves (RR) and two roan calves (RW)

Explanation:

According to this question, a gene coding for fur colour in cattle is involved. Red alleles (R) and white alleles (W) are co-dominant to produce a roan cattle (RW). The possible traits of the following crosses are (see attached punnet square):

1) A red bull (RR) is mated to a red (RR) cow: All red calves i.e. RR

2) A red (RR) bullis mated with white (WW) cow: All roan calves i.e RW

3) A roan bull (RW) is mated with red (RR) cow: 2 red calves (RR) and two roan calves (RW).

7 0
3 years ago
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